Which elements have the electronic configuration ns2 np6 in their outer most orbit?

Which elements have the electronic configuration ns2 np6 in their outer most orbit?

The element present in the 18th group (except Helium(He) has the general electronic configuration ns2np6. The elements of the 18th group are called noble gas, having 8 electrons in valence shells, and their outer shells are filled with valence electrons, making them very stable.

What is ns2np1?

edit Answer. Satyanarayana Prasad. Ans: This is an outermost electronic configuration of an atom. And the atom belongs to 13th group. In ns2np1 : n -stands for nth shell.

Which noble gas does not have general noble gas configuration?

Helium

Is helium a noble gas?

Elements with shells that are already full and have no electrons to lend are called noble gases—and helium, the smallest of these, is considered the most inert.

Why does NASA use so much helium?

Liquid helium is critical for cooling cooling infrared detectors, nuclear reactors and the machinery of wind tunnels. The space industry uses it in sensitive satellite equipment and spacecraft, and Nasa uses helium in huge quantities to purge the potentially explosive fuel from its rockets.

How much helium does NASA use?

Rising helium prices might not put much of a dent in the average birthday party balloon budget, but they add up quickly for an organization like NASA, which uses up to 100 million cubic feet of helium each year.

How is helium used in rockets?

Helium is used to pressurize and stiffen the structure of rockets before takeoff and to pressurize the tanks of liquid hydrogen or other fuel in order to force fuel into the rocket engines. It is useful for this application because it remains a gas even at the low temperature of liquid hydrogen.

What is helium used for?

Because it is very unreactive, helium is used to provide an inert protective atmosphere for making fibre optics and semiconductors, and for arc welding. Helium is also used to detect leaks, such as in car air-conditioning systems, and because it diffuses quickly it is used to inflate car airbags after impact.

Is helium used in medicine?

This rare element is critical to medicine where ultra-low-temperature liquid helium is used to cool the superconducting magnets in MRI scanners. About a third of all produced helium is used in these medical instruments with industrial applications using up most of the rest.

Is helium used in airbags?

About 80% of car airbags harness a helium and argon gas mixture compressed in a steel cartridge at 600 bar. Helium has a number of advantages in this application, foremost of which is the fact that it does not generate heat during the inflation process.

Why do airbags only inflate if there is a crash?

The chemical at the heart of the air bag reaction is called sodium azide, or NaN3. CRASHES trip sensors in cars that send an electric signal to an ignitor. A handful (130 grams) of sodium azide will produce 67 liters of nitrogen gas–which is enough to inflate a normal air bag.

What gas fills the airbag?

nitrogen gas

How can we solve the shortage of helium?

Last year, Priceonomics.com reported that the US National Helium Reserve would be depleted by 2020. However, Air Products, a world-leading industrial gas company, just filled its 100th helium ISO container at their Doe Canyon Helium plant.

What is the current price of helium?

In fiscal year (FY) 2019, the price for crude helium to Government users was $3.10 per cubic meter ($86.00 per thousand cubic feet) and to nongovernment users was $4.29 per cubic meter ($119.00 per thousand cubic feet).

Does Party City use helium?

Does Party City have helium? Yes! Our stores have helium and we’re ready to inflate balloons for your next celebration.

Does Walmart refill helium tanks?

Yes, the helium tank is refillable.

How can you tell if a helium tank is empty?

the valve handle by turning it counter-clockwise. Press and hold down on the tilt-nozzle (see photo 2) until the tank is empty. Listen and feel for pressure discharging from the tilt-nozzle. The tank is empty when no sound is heard or pressure is felt.